National Rankings

National Data Info
Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Contiguous U.S.

Precipitation Rankings, July 1949

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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
July 1949
1-Month
3.08"
(78.23mm)
2.78"
(70.61mm)
0.30"
(7.62mm)
106th Driest
Driest since:
1930
23rd Wettest
Wettest since:
1950, 1958
Jun–Jul 1949
2-Month
6.28"
(159.51mm)
5.70"
(144.78mm)
0.58"
(14.73mm)
105th Driest
Driest since:
1930
24th Wettest
Wettest since:
1928
Ties: 1975
May–Jul 1949
3-Month
9.26"
(235.20mm)
8.62"
(218.95mm)
0.64"
(16.25mm)
95th Driest
Driest since:
1988
34th Wettest
Wettest since:
2015
Ties: 1991
Apr–Jul 1949
4-Month
11.35"
(288.29mm)
11.13"
(282.70mm)
0.22"
(5.59mm)
64th Driest
Driest since:
1934
65th Wettest
Wettest since:
2015
Mar–Jul 1949
5-Month
13.82"
(351.03mm)
13.64"
(346.46mm)
0.18"
(4.57mm)
62nd Driest
Driest since:
1936
67th Wettest
Wettest since:
1973
Ties: 1896
Feb–Jul 1949
6-Month
16.22"
(411.99mm)
15.78"
(400.81mm)
0.44"
(11.18mm)
72nd Driest
Driest since:
1934
57th Wettest
Wettest since:
2019
Ties: 1992
Jan–Jul 1949
7-Month
19.38"
(492.25mm)
18.09"
(459.49mm)
1.29"
(32.76mm)
103rd Driest
Driest since:
1934
26th Wettest
Wettest since:
2019
Dec 1948–Jul 1949
8-Month
21.97"
(558.04mm)
20.43"
(518.92mm)
1.54"
(39.12mm)
103rd Driest
Driest since:
1931
25th Wettest
Wettest since:
2019
Nov 1948–Jul 1949
9-Month
25.36"
(644.14mm)
22.66"
(575.56mm)
2.70"
(68.58mm)
115th Driest
Driest since:
1934
13th Wettest
Wettest to Date
2019
Oct 1948–Jul 1949
10-Month
26.90"
(683.26mm)
24.83"
(630.68mm)
2.07"
(52.58mm)
107th Driest
Driest since:
1934
21st Wettest
Wettest since:
2019
Sep 1948–Jul 1949
11-Month
28.71"
(729.23mm)
27.33"
(694.18mm)
1.38"
(35.05mm)
94th Driest
Driest since:
1934
34th Wettest
Wettest since:
2019
Aug 1948–Jul 1949
12-Month
30.95"
(786.13mm)
29.95"
(760.73mm)
1.00"
(25.40mm)
82nd Driest
Driest since:
1918
46th Wettest
Wettest since:
2019
Feb 1948–Jul 1949
18-Month
48.09"
(1,221.49mm)
45.74"
(1,161.80mm)
2.35"
(59.69mm)
96th Driest
Driest since:
1931
32nd Wettest
Wettest since:
2019
Aug 1947–Jul 1949
24-Month
61.67"
(1,566.42mm)
59.92"
(1,521.97mm)
1.75"
(44.45mm)
84th Driest
Driest since:
1918
43rd Wettest
Wettest since:
2020
Aug 1946–Jul 1949
36-Month
92.38"
(2,346.45mm)
89.88"
(2,282.95mm)
2.50"
(63.50mm)
86th Driest
Driest since:
1956
40th Wettest
Wettest since:
2019
Aug 1945–Jul 1949
48-Month
123.49"
(3,136.65mm)
119.78"
(3,042.41mm)
3.71"
(94.24mm)
93rd Driest
Driest since:
1956
32nd Wettest
Wettest since:
2019
Aug 1944–Jul 1949
60-Month
154.97"
(3,936.24mm)
149.64"
(3,800.86mm)
5.33"
(135.38mm)
96th Driest
Driest since:
1934
28th Wettest
Wettest since:
2019

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